Finding the Fourth Proportional to 12,096,991.70, 18,145,487.55 and 3,121,543.70
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Solution
The fourth proportional to 12,096,991.70, 18,145,487.55 and 3,121,543.70 is: 4,682,315.55
Step by Step Solution
- Step 1: Write the proportion equation
12,096,991.70 : 18,145,487.55 = 3,121,543.70 : x - Step 2: Convert to fraction form
12,096,991.70/18,145,487.55 = 3,121,543.70/x - Step 3: Cross multiply
12,096,991.70x = 18,145,487.55 × 3,121,543.70 - Step 4: Simplify right side
12,096,991.70x = 56,641,932,345,130.94 - Step 5: Solve for x
x = 56,641,932,345,130.94/12,096,991.70 - Step 6: Final answer
x = 4,682,315.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.